TECH
08/25/2014 07:41 am ET Updated Aug 25, 2014

Systems That Can Secretly Track Where Cellphone Users Go Around The Globe

Kohei Hara via Getty Images

Makers of surveillance systems are offering governments across the world the ability to track the movements of almost anybody who carries a cellphone, whether they are blocks away or on another continent.

Read more on www.washingtonpost.com

CONVERSATIONS